Oil-burner.



H. E. BROWN.

OIL BURNER.

APPLICATION FILED AUG-4,1916.

Patented Apr. 17, 1917.

INVENTOR Hugh Edward Brown BY ya ATTORNEY UNITED STATES PATENT OFFICE.

HUGH EDWARD BROWN, OF PORTLAND, OREGON, ASSIGNOB, OF ONE-HALF '10 EDWARD BOYCE, OF PORTLAND, OREGON.

. OIL-BURNER.

Specification of Letters Patent.

Patented Apr. 17, 1917.'

Application filed August 4, 1916-. Serial No. 118,188.

To all whom it may concern:

Be it known that I, HUGH EDWARD BROWN, -a citizen of the United States, and a resident of the city of Portland, county of Multnomah, State of Oregon, have invented a certain new and useful Improvement in Oil-Burners, of which the following is a specification.

This invention relates to the general type of oil burners in which steam is employed to atomize the oil and place it in a state for ready ignition.

The object of my invention is to provide a simple and eflicient' burner in which the steam is utilized to pro-heat the oil to the temperature of the steam] before ,mixing therewith; also, by so pre-heating, to raise the temperature of the oil approximately to its own flash point. The oil, being given a higlf degree of fluidity, the required pressure of the steam used for atomizing the oil is considerably lessened. The immediate pre-heating of the oil, furthermore, 'ves it a partial vaporization, and incidenta ly imparts a velocity to the jet of oil more nearly equal to that of the steam-jet.

A further object of my invention is to cause a more thorough and intimate intermixture of the oil and steam vapors b causing the two atomized fluids to come thoroughly intermixed and then passing the same through an intensely heated mixing chamber provided in the burner, this chamher being projected into the furnace and.

thus heated by the latter. A further object of my invention is to so'arrange the parts of my burner that it may be readily taken apart for cleaning.

The above specified and other incidental features of my invention are hereinafter fully described, reference being had to the accompanying drawings, in which:

Figure 1 is a longitudinal, sectional plan view of my improved oil burner, taken on line AA of Fig. 3.

Fig. 2 is a larger scale but similar sectional plan view of the spray nozzle of my burner as it appears in Fig. l; and

Fig. 3 is a front end elevation of the nozzle.

The body a of the oil burner constitutes a pro-heating chamber and is provided with a steam inlet pipe I). An oil pipe 0 is provided with a coil (1, held in the heating chamber by means of the neck e, on which termixture.

is connected a packing box 7', bearing a packing f which prevents the escape of steam. The atomizing nozzle 9 is threaded of the flange k of the spray nozzle. A flange I nipple Z and the bushin j clamp the flange of said atomizing nozz e and by so doing hold the latter rigidly same time keep the oil-pipe 0011 d centered within the heating chamber. A pipe m of substantial length, constituting an internal mixing chamber, is threaded securely in one end into the nipple Z, and on its free end is threaded the burner-tip n, which is preferably provided with a slotted orifice q.

The atomizing nozzle g (shown in Figs. 2 and 3) is provided with oil orifices o, preferably arranged in a common plane and comprising an axial orifice and a diverging orifice on either side thereof, the divergence being from the .nozzle chamber toward the outer or front face of the nozzle.- 76 of the nozzle is provided with steam orifices 72, made convergent as'they approach the front face of the nozzle, and are preferably confined to the lower in Fig. 3, so as to leave a mixing space adjacent the exterior of the atomizin in said mixing chamber, into w ich the steam vapors are not projected but in which they and the atomized oil may twirl around, and in so doing eflect a more thorough in- With this arrangement the steam and oil jets are made to intersect, and by so doing effect a thorough atomizing of the oil and a preliminary intermixture of the atomized oil and the steam vapor.

The steam enters the heating chamber a l the necessary degree. The oil circulates through a brass or copper coil 0?, which it enters under a pressure of approximately forty pounds and at ordinary atmospheric temperature. The coil 0! is made of sulficient length to enable the oil,in passing through, to become heated to the temperature of the steam. The sprays of oil and steam emitted from the atomizing nozzle 9' half, as shown nozzle,

in place, and at the The flange become a very intimate and intensely hot as already mentioned, and when passed out 7 through the slot 9 of the burner n the mixture is in readiness for instant ignition.

The length of the coil pipe and the relative size of the preheat-ing and mixing chambers must be proportioned to the size of the burner.

I claim:

1. In a burner of the type described, the combination of an elongate tubular body for the steam, a stufiing box at the inlet end of said body, an oil pipe having a part coiled within said body and its inlet end extending through said stufiing box, an atomizing nozzle secured at the discharge end of said body, said oil pipe having its outlet end secured to said atomizing nozzle, the latter being made with a peripheral flange, said nozzle having orifices comprising an axial orifice and a diverging orifice on either side thereof, said flange being made with converging orifices, a mixing chamber of substantial length aflixed over said atomizing nozzle and its said flange, and a burner tip at the discharge end of said mixing chamber.

2. In a burner of the type described, the combination of an elongate tubular body for the steam, a stufling boxat the inlet end of said body, an oil pipe having a part coiled within said body and its inlet end extending through said stuffing box, an atomizing nozzle removably secured at the discharge end of said body, said oil pipe having its outlet end removably secured to said atomizing no'zzle, the latter beingmade with a peripheral flange, said nozzle having orifices comprising an axial orifice and a diverging orifice on either side thereof, said flange being made with converging orifices, a mixing chamber of substantial length removably afiixed over said atomizing nozzle and its said flange, and a burner tip at the discharge end of said mixing chamber.

3. In a burner of the type described, the combination of an elongate tubular body for the steam, a stuffing box at the'inlet end ofsaid body, an oil pipe having a part coiled within said body and its inlet end extending through said stufiing box, an atomizing nozzle secured at the discharge end of said body,.said oil pipe having its outlet end secured to said atomizing nozzle, the latter being made with a peripheral flange, said nozzle having orifices arranged.

in a common plane and comprising an axial orifice and a diverging orifice on either side thereof, said flange being made with con verging orifices, a mixing chamber of substantial length affixed over said atomizing nozzle and its said flange, and a burner tip at the discharge end of said mixing chamber.

4. In a-burner of the type described, the

combination of an elongate tubular body for the steam, a stuffing box at the inlet end of said body, an oil pipe having a part coiled within said body and its inlet end extending through said stufling box, an atomizing nozzle secured at the discharge end of said body, said oil pipe having its outlet end secured to said atomizing nozzle, the latter being made with a peripheral flange, said nozzle having orifices arranged in a common plane and comprising an axial orifice and a diverging orifice on either side thereof, said flange being made with converging orifices in its lower half and being without perforations in its upper half, a mixing chamber of substantial length affixed over said atomizing nozzle and its said flange, and a burner tip at the discharge end of said mixing chamber.

5. In a burner of the character described, the combination of an elongate tubular body for the steam, a stufling box at the inlet end of said body,.an oil pipe having a part coiled within said body, and its inlet end extending through said stufiing box, a reducer threaded on the outlet end of said body, a bushing threaded on the outlet end of said reducer, a flanged coupling ring threaded on said bushing, a nipple made with a companion flange engaging with said flange of the coupling ring, said bushing being made with a recess, an atomizer nozzle provided with a peripheral'flange seated in said recess, said oil pipe having its outlet end secured to said atomizing nozzle, the latter having orifices comprising an axial orifice and a diverging orifice on either side thereof, said flange of said atomizing nozzle being provided with converging orifices, a tubular mixing chamber of substantial length threaded in said nipple, and a burner tip aflixed on the outlet end of said mixing chamber.

6. In a burner of the character described, the combination ofan elongate tubular body for the steam, a stuffing box at the inlet end of said body, an oil pipe having a part coiled within said body, and its inlet end extending through said stuffing box, a reducer threaded on the outlet end of said body, a bushing threaded on the-outlet end of said reducer, a flanged coupling ring threaded on said bushing, a nipple made with a companion flange engaging with said flange of the coupling ring, said bushing being made with a recess, an atomizernozzle provided with a peripheral flange seated in said recess, said oil'pipe having its outlet end secured to said atomizing nozzle,the latter having orifices located in a common horizontal plane and comprising an axial orifice and a diverging orifice 011 either side thereof, said flange of said atomizing nozzle being provided with converging orifices, a tubular mixing chamber of substantial length chamber.

7. In a burner of the type described, the combination of an elongate tubular body for the steam, an oil pipe extending through said tubular body, an atomizing nozzle secured at the discharge end of said body, and said oil pipe having its outlet end secured 10 to said atomizing nozzle, the latter being made With a peripheral flange, said nozzle having orifices comprising an axial orifice and a diverging orifice on either side thereof, said flange being made with converging orifices, a mixing chamber of substantial length aflixed over said atomizing nozzle and its said flange, and a burner tip at the discharge end of said mixing chamber.

HUGH EDWARD BROWN. 

